The deal: Countdown to Summer promises discounts on rooms through the end of May, but the biggest savings come with reservations made this month. There are great properties in this hotel group, so shop the sales online to find the best deal for the destination you want.

When: Reservations must be made by April 30 (for the deepest discounts).

Tested: I checked availability for the weekend of June 14-16 at hotels in this brand to see how the savings played out. I found a room available at Terranea Resort on the Palos Verdes Peninsula at 30% off the usual rate: $266 instead of $380 a night (prices exclude tax). I also checked rates at the waterfront Woodmark Hotel in Seattle and found a room for $186 instead of $219 a night, or a 15% savings, excluding tax.